Asterisk
Details
| Last Update: | 2008-01-25 11:01:16 |
| Version: | 1.4.17 / 1.6.0 B |
| License/Program Type: | GPL (GNU General Public License) |
| Publisher: | Digium, Inc |
| Price: | $0.00 |
Description:
Asterisk software is the world&8217;s leading open source
telephony engine and tool kit. Offering flexibility unheard of in
the world of proprietary communications, Asterisk empowers
developers and integrators to create advanced communication
solutions...for free.
Asterisk is released as open source under the GNU General
Public License (GPL), and it is available for download free of
charge. Asterisk is the most popular open source software
available, with the Asterisk Community being the top influencer in
VoIP.
Asterisk was created by Mark Spencer of Digium, Inc in 1999.
Code has been contributed from open source coders around the world,
and testing and bug-patches from the community have provided
invaluable aid to the development of this software.
Asterisk as a switch (PBX)
Asterisk can be configured as the core of an IP or hybrid PBX,
switching calls, managing routes, enabling features, and connecting
callers with the outside world over IP, analog (POTS), and digital
(T1/E1) connections.
Asterisk runs on a wide variety of operating systems including
Linux, Mac OS X, OpenBSD, FreeBSD and Sun Solaris and provides all
of the features you would expect from a PBX including many advanced
features that are often associated with high end (and high cost)
proprietary PBXs. Asterisk's architecture is designed for maximum
flexibility and supports Voice over IP in many protocols, and can
interoperate with almost all standards-based telephony equipment
using relatively inexpensive hardware.
Asterisk as a gateway
It can also be built out as the heart of a media gateway,
bridging the legacy PSTN to the expanding world of IP telephony.
Asterisk&8217;s modular architecture allows it to convert between
a wide range of communications protocols and media codecs.
Asterisk as a feature/media server
Need an IVR? Asterisk&8217;s got you covered. How about a
conference bridge? Yep. It&8217;s in there. What about an
automated attendant? Asterisk does that too. How about a
replacement for your aging legacy voicemail system? Can do. Unified
messaging? No problem. Need a telephony interface for your web
site? Ok.
Asterisk in the call center
Asterisk has been adopted by call centers around the world
based on its flexibility. Call center and contact center developers
have built complete ACD systems based on Asterisk. Asterisk has
also added new life to existing call center solutions by adding
remote IP agent capabilities, advanced skills-based routing,
predictive and bulk dialing, and more.
Asterisk in the network
Internet Telephony Service Providers (ITSPs), competitive local
exchange carriers (CLECS) and even first-tier incumbents have
discovered the power of open source communications with Asterisk.
Feature servers, hosted services clusters, voicemail systems,
pre-paid calling solutions, all based on Asterisk have helped
reduce costs and enabled flexibility.
Asterisk everywhere
Asterisk has become the basis for thousands of communications
solutions. If you need to communicate, Asterisk is your answer.
What's New in 1.4.17 Stable Release:
· This release contains a fix for a SIP security issue,
as well as a number of other bug fixes.
· The security issue is documented in the published
security advisory, AST-2008-001. The vulnerability allows an
attacker to cause a crash in the SIP channel driver with a properly
crafted transfer. This issue requires an authenticated session that
allows transfers to be exploited. If unauthenticated calls with
transfer capability are allowed, then this issue could be exploited
with an unauthenticated session. Also, this issue only affects
Asterisk 1.4. Asterisk 1.2 is not affected. Systems that do not use
chan_sip are also not affected.
· The security advisory is available at
http://downloads.digium.com/pub/security/AST-2008-001.pdf.
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